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Advisory record · GHSA-xm67-587q-r2vw

Miscompilation of `i8x16.select` with the same inputs on x86\_64

CVSS 3.1 LowEPSS 0.0062 · 50th percentile

Published by the GitHub Advisory Database at 3 Mar 2023, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
wasmtimecrates.io>=0.0.0-0, <4.0.1 || >=5.0.0, <5.0.1 || >=6.0.0, <6.0.14.0.1, 5.0.1, 6.0.1
Identifiers
GHSA-xm67-587q-r2vw · CVE-2023-27477 · RUSTSEC-2023-0093
Weakness (CWE)
CWE-193
Tags
Published
3 Mar 2023
Updated
12 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Rust crate wasmtime is affected in versions before 4.0.1, from 5.0.0 before 5.0.1, and from 6.0.0 before 6.0.1. The source gives few details beyond a miscompilation of the i8x16.select operation with identical inputs on x86_64. Upgrade to 4.0.1, 5.0.1, or 6.0.1 depending on your release line; no attacker requirements or impact are described in the source.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
3.1 Low 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0062, the 50th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:24 UTC First seen by agentprime
  2. 31 Oct 2026, 14:24 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.